Dynamo-electric machine.



LDYNAMO. ELECTRIC MACHINE. Y "'A'rrmoulo'n funn nu 1. 190e.

931,606. PanendAug. 17,1909. 't

mom/1@ new; nuls. In: Mino.. wwwrun. v cA `To au whom it muy concern:

AnnrrEn srarEs PATENT oEEioE.

FRITZ E. HIBT. OF MILWKUKE-E, WISCONSIN, ASSIGNOR TO ALLlS-CHALMERSCOMPANY, A (,OltlOlti'i'llON OF NEW JERSEY.

DYNAlVO-ELECTRIC MACHINE.

Be it known that l, 'Fni'rz E. Hin'r, a citi- Zen of Switzerland,residing at Milwaukee, in rthe Icounty of Milwaukee lind State oflVisconsin, have invented certain new and useful Improvements in Dynamo-Electric Machines, of which the following is a full,

` clear, and exact specification.

My invention 'relates to dynamo-electric machines, and specifically tothe rotors of turbo-generators.

One of the troublesome problems in turbo constructions is to obtain apropersupport 1- for the leads thatl connect the collector lrings andthe rotor windings. This is on account of the enormous centrifugalforcesv developed in the rotating members of turbo generators, and thefact that the collector leads extend through spaces where they must bespecially supported. A number of schemes have been proposed forsupporting these collector leads. Such schemes have often been quitecomplicated, and have universally been very expensive.

It is the object of my presentinvention to provide an arrangement forsupporting these collector leads which shall be at once simple inconstruction, effective in operation, and inexpensive to manufacture.

l In carrying outl my invention there is pro .Yideda block, preferablyof insulating 1na.- terial, which is set into and firmly fastened .inthe end cover or end disk of the rotor,

and the collector lead is led-through asuitable opening in said blockand appro-Ximately radially ,along the face thereof, the part of thecollector lead which extends along the side of the block being suitablyfastened thereto, as by a clamp. Une of the holes usually provided inthe end disks for Ventilating purposes may conveniently be vused forreceiving this block.

The various 'novel features of my invention will appear from thedescription and drawing, andl will be particularly pointed out in theclaims.

Figure 1 is an elevation of a turboegenerator to which my invention isapplicable, though itis also useful in `other types of machines; Fig. 2is a fragmentary longitudinal section through such machine, illustratingone application of my invention; Fig. 3 is a partial section on the lineof Fig. 2; Figs. l, 5, and 6 are views 'illustrating details ofconstruction; F 1g. 7 1s a View Speciicaton of Letters Patent.

Application filed May 1, 1909.

similar to Fig. 2, but showing a modification; and Figs. 8 and J showdetails of the modification.

The shaft vl() carries a rotor core 1l provided with a. suitable windingand rotating within the stator 12. The winding of the rotor is locatedin slots in the roter core and Iings usually provided in the end disksfor vei'itilating purposes. In the arrai'igement, illustrated they arethe latter. lf there are but two terminals of the rotor winding, andthese two terminals are connected respectivelyl to slip rings atopposite ends of 'the machine, there will be but one of these blocks ineach end disk. Otherwise, there willbe more than one block in one enddisk. Since the collecter lead connections are all alike, itissutiicient to describe one of them.-

The block 1G has an. enlarged head 18 which may be either integral withthe block as shown, or separate from the body of the block. The head 18may be eitherround as shown in Fig. 7, in which case it is preferablycountersunk in the end disk, or square as shown in Fig. 2, in which caseits corner portions abut against the end disk. In either case the head18 is firmly fastened to the end disk by means of screws 19.

In the arrangement shown in Figs. 2 to (3 inclusive, the collector 'leadextends from the endportions 13 of the rotor winding throughian axialopening in the disk 1li and its head 18, and thence substantiallyradially of the rotor across the face of the head 18.

.T hence it extends axially through an insulating sleeve 2O in the ring21, and is bent inward and clamped between nuts at the end of the rodQ3, which in turn extends through an insulating bushing 2st in thebushing ring Q5 and into the collector ring Q6. The part of thecollector lead which extends radially along the block 16 is clamped tothe block by a cleat Q7 and two bolts :28.

' and 9 theicollector` lead 22 extends from the end portlonsl of theyrotor winding radially inward alongthe inner face of the block 16,

. .and extends 'axiallyof the rotor through an lating sleeve 2 0 in'thering 2l, and is fas-- 15 'the collector lead isl firmly supported `ring,a collector lead connecting said Wind- .one face of said block, andmeans for clamp- -sa-id openings, a' collector lead connecting lead to,said' block;

The` cleat .27 has'` projecting ends. .which gartsare lirrnly. clampedare turned thev nutsof thebolts. 28 against `In the arrangement shown inFigs. 7, 8,-

to which-itis clamped by a cleat 30 and screws 31. After traversingpractically the whole ofthe inner face of block 16, it bends opening insaid block land through the insutened to the rod 23extending from thecollector ring 26 inthe same manner as in the arran ement shown inFig.l- 2. f v

- In oth of -the arrangen'ients illustrated throughout-the greater partof its length, andl is thus prevented from being distorted and perhapsruptured by the action of centrifutal force. Both the arrangementsillustrate vserve their purpose eifectually, and ivithal are simpleandinexpensive to construct and install.

Many modifications may be madein the precise arrangement shown anddescribed, and all such which donot .depart from the spirit and scopeofmy invention I aim to cover in the following'claims.

What I claim as new is:

1. In theretor of a dynamo-electric machine, the combination of a shaft,a core mounted on the shaft, a Winding carried by the core, an endcover, a block of insulation set in the end of said end cover, acollector ing and said ring and extending axially through an opening 1nsaid block and along ing to the block that part `of the collector leadwhich extends along its face.

2, In the' rotary member of 'a dynamoelectric machine, the .combinationof a shaft carrying a core, a winding, and a collector rino', an endcover forsaid `Winding havlng a' plurality of openings through its end,a block ofv insulating material set in one of said collector ring withsaid Winding and extending substantially radially along one face-of saidblock and substantially axially of the machine through an opening insaid block, andmeans for clamping said collector v. 3. the rotaryvmember of a dynamoeleetricma'chine, the combination of a shaft, a coremounted on the shaft, a Winding carried by the core and having'end-portions projecting beyond the core, an 'end cover for, theprojectin portions 'ofv the winding, a block of insuating material setin an opening througlrthe end of said end cover, a collector ring, acollector lead joining said )vinding and said col1ector"ring andextendnig from the' end portions of the windingthrough an openingaxially of the machine in said block v.and substantially radially of themachine across the face of said block, and means for clampinfr'saidradially extending portion of'theead to the face oi saiflblock. i 4. Inthe rotary member of a dynamo- .electri machine, the combination of ashaft carrying a core, a winding, and a collector ring,- an end disk, ablock of insulation fastened in an opening in said disk,- a collectorlead connecting said winding With said collector ring and extendingalong one faccfof the block and through an opening through the block,and means fo'rclamping said lead to .the block.

5. In the' rotary member of a. dynamoelectric machine, the combinationof a shaft carrying a core, a winding,`and a collector ring, an enddisk, a block of insulation fastened in an opening in said disk, acollector' leadconnecting said'l winding with said collector ring andextending alongone face of the block and through an opening through theblock, a' cleat 4for clamping said lead to saidblock, and bolts forfasteningsaid cleat to the block.

6. In the rotary member `of a dynamoelectric machine, the combination ofa shaft carrying a core, a winding, and a collector ring,^an end disk, ablock of yinsulation fastened in an opening in said disk, a collectorlead connecting said winding with said co1- lector ring and extendingalong one endface of the bl ook and through an opening.; through theblock, a cleat-lvfor clamping said lead to said block, bolts'forfastening said cleat to thev block, and extensions on said cleat whichare bent up to lock the nuts of said bolts.

7. In the rotary member of a dynan'ioelectric machine, the combinationof a shaft carrying a core, "a winding, and a collector ring, an enddisk having an opening, a block fastened in said opening, collector4leads connecting said winding with said collector ring and extendingacross one face of the block and through an opening through the block,and means for clamping the lead to the block.

In testimony'whereof I ailix my signature, inthe presence of twowitnesses. FRITZ E. I-IIRT.

Witnesses:

H. C. CASE, CIL-is. L'. BYRON.

